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प्रश्न
Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.
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उत्तर
Grass → Grasshopper → Frog → Bird
Producer Primary consumer Secondary consumer Tertiary consumer
Autotroph Herbivore Carnivore Large carnivore
1st trophic level 2nd trophic level 3rd trophic level 4th trophic level
संबंधित प्रश्न
What will be the amount of energy available to the organisms of the 2nd trophic level of a food chain if the energy available at the first trophic level is 10,000 joules?
List two main components of ecosystem?
Which organisms belong to third and fourth trophic levels in the food chain comprising the following?
Rats, Plants, Hawk, Snakes
Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Will the impact of removing all the organisms in a trophic level be different for different trophic levels?
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name two zooplanktons.
What would happen to the number of grass plants and foxes if the number of rabbits decreased?
(a) Match the terms given in column I with the terms given in column II and column III having the same meaning:
| Column I | Column II | Column III | |
| (i) | Secondary consumer | Herbivore | 1st trophic level |
| (ii) | Primary consume | Autotroph | 3rd trophic level |
| (iii) | Producer | Carnivore | 4th trophic level |
| (iv) | Tertiary consumer | Large carnivore | 2nd trophic level |
(b) Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.
In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?
If 5 joules of energy is available at producer level (plants), then how much energy will be transferred to the lion in the following food chain?
Plants → Goat → Lion
The following statement is true or false:
Only 10 per cent of the light energy given by the sun is available for transfer at each higher trophic level in a food chain.
Fill in the following blank with suitable word :
Lettuce → ............. → Fox
Explain how harmful chemicals enter our bodies.
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Which other organism you could write in place of bird in the above food chain?
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
Which of the following is a logical sequence of food chain?
______ obtained energy from the chemical breakdown of dead organisms.
Differentiate between herbivores and carnivores.
Which statement is correct with respect to the food chain?
In the food chain Grass → Insects → Thrush → Sparrow Hawk, where is most of the energy lost during the transfer from one trophic level to the next?
